Post-Breeding Activities of Mallards and Wood Ducks in North-Central Minnesota

Abstract

David S. Gilmer, Ronald E. Kirby, I. J. Ball, John H. Riechmann, Post-Breeding Activities of Mallards and Wood Ducks in North-Central Minnesota, The Journal of Wildlife Management, Vol. 41, No. 3 (Jul., 1977), pp. 345-359